MAV on TCP Server

Hey people! I have a little bit of trouble on my TCP Chat program.... Here is the code:

[CODE]
Graphics 400,200,32,2
AppTitle "SERVER"

Global msg$,serv,t,name$,num_of_ppl=0,ready=False,ready2=False
Const ESC=1

Type user
Field stream
End Type

serv=CreateTCPServer(50000)
If serv=0 End

While Not KeyDown(ESC)
t=AcceptTCPStream(serv)

If t
msg$=ReadLine(t)
If msg$="[LOGIN]"
name$=ReadLine(t)
u.user=New user
u\stream=t
num_of_ppl=num_of_ppl+1
For u.user=Each user
WriteLine u\stream,"[SERVER]"
WriteLine u\stream,name$+" has logged in!!!"
WriteLine u\stream,num_of_ppl
Next
EndIf
Else

For u.user=Each user
If Not Eof(u\stream)
If ReadAvail(u\stream) Then
msg$=ReadLine(u\stream)
If msg$="[MESSAGE]"
msg$=ReadLine(u\stream)
READY=True
ElseIf msg$="[LOGOFF]"
msg$=ReadLine(u\stream)
READY2=True
EndIf
EndIf
Else
msg$=u\stream
ready2=True
EndIf

If ready=True
ready=False
For u.user=Each user
WriteLine u\stream,"[USER]"
WriteLine u\stream,msg$
Next
EndIf
If ready2=True
ready2=False
num_of_ppl=num_of_ppl-1
For u.user=Each user
WriteLine u\stream,"[SERVER]"
WriteLine u\stream,msg$+" has logged off."
WriteLine u\stream,num_of_ppl
Next
EndIf
Next
EndIf
Delay 10

Wend

msg$="The server has logged off and you have been disconnected."
For u.user=Each user
WriteLine u\stream,"[SERVER]"
WriteLine u\stream,msg$
Next
Delay 20
End
[/CODE]

I get a MAV error every time someone sends a message.
I get the area right at the end of the u.user=each user loop. It gets the error at Next. Everything I do it always
gets the error at Next.

Did you try this in debug mode? It may give you a more detailed error message.

I did. I enabled debug mode and it said the exact same thing except it was in a slightly different window with an !. It works fine if they are entering their name. It doesn't work fine if they entered text.

Maybe the text contains invalid characters (space etc.) that the names don't contain ?

I've tried everything. I even took out the []'s on the headers!

still here!

i don't know anything about tcp chat myself, but is there nothing in the archives that could help?

edit: yes, here's one.
edit2: oops, seems you know this one.

http://www.blitzbasic.com/codearcs/codearcs.php?code=28